FAQ
Why can’t I hear anything?
The human ear can hear frequencies from 20 Hz up to 20,000 Hz. Through aging, or damage due to sustained exposure to loud sounds (such as loud concerts), the upper frequency limit decreases. Ondo uses a high frequency sound (around 19,000 Hz) which is likely to be above this limit for most people.
Is it safe to use?
Ondo is simply playing and recording a sound using the ear piece and microphone on the headset; something that the headset is designed to do. The sound is high frequency and probably inaudible to most ears (see “Why can’t I hear anything?”). To avoid any discomfort or potential damage to the ear (and for Ondo to work), the ear pieces should be removed from the ear when Ondo is running.
Why is the temperature incorrect?
When using Ondo for the first time with a new ear piece/microphone setup, it is necessary to run a calibration at a known temperature. This is because the measurement is very sensitive to the distance between the microphone and earpiece. After calibration, the temperature reading should be correct unless the positioning of the ear piece relative to the microphone changes.
Why do I have to keep recalibrating the temperature?
Ondo works by measuring very accurately the time it takes for sound to travel between the ear piece and the microphone and is therefore sensitive to any changes in the positioning of the ear piece or microphone. If you need to regularly recalibrate the temperature, check that the ear piece and microphone are very secure and cannot move relative to each other. Even a very small movement will change the temperature reading. Consider securing the microphone and earpiece using some blu tack or modelling clay.
Why do I keep receiving a warning of a “Noisy Signal”?
This is an indication that the microphone is not receiving a clear sound from the right ear piece. Please check the following steps to correct this problem:
Make sure that the left ear piece is as far away from the microphone as possible.
Ensure that the distance between the right ear piece and microphone is set correctly (it should be about the same as the thickness of the phone)
Ensure that your hands or any other objects are well clear of the microphone and right ear piece (this can cause sound to bounce back and disturb the signal)
Ensure that the microphone is not directly in any wind or turbulent air
Avoid any very noisy environments
Will it work with my iPhone or iPad?
Ondo has been developed and tested on a wide range of iPhones (from 5s onwards) and iPad (mini, II, Air and Pro) models.
Will it work with my headset?
We recommend using Apple EarPods with the Lightning connector. Ondo will also work with the older style Jack plug connector, but our testing has shown that this connector is not as reliable and you may experience some intermittent performance. Ondo has not been tested with non-Apple headsets so its performance cannot be guaranteed. Currently Ondo will not work with AirPods.
Why doesn’t the temperature change immediately?
The response time for an acoustic thermometer, such as Ondo, is much quicker than a conventional thermometer. There is some delay while the air between the ear piece and the microphone warms or cools. There is also some damping within the software to stabilise the readings. When moving to a new temperature area, the temperature should start to change within around thirty seconds and have stabilised within five minutes.
How accurate is the temperature reading?
The accuracy of the temperature reading will be dependent upon the location and stability of the headset fixing and calibration. When set up correctly with the speaker aligned to the centre of the microphone and an air gap of “one phone thickness”, the temperature reading should be within one to two degrees (Celsius) of the true value.
Can I run more than one device at a time?
No, at the moment it is not possible to run Ondo on more than one device in the same area. The sound from one device will interfere with the other.